表面技术2016，Vol.45Issue(1)：96-100,5.DOI:10.16490/j.cnki.issn.1001-3660.2016.01.015
TA2表面电火花沉积Zr/WC复合涂层特性及界面行为研究
Coating Characters and Interface Behavior between TA2 and Zr/WC Coating Produced by Electro-spark Deposition
摘要
Abstract
Objective To study the Zr/WC coating character and behavior on the surface of TA2 by electro-spark deposition.Methods The microstructure, the chemical composition distribution, the residual stress, the micro-hardness distribution and the relative wear resistance were received by canning electron micro-scopy ( SEM) , energy dispersion spectrum ( EDX) , X-ray stress analyser, hardness meter and wear tester. Results The deposited layer was continuous and uniform. The thickness was about 50μm to 80 μm, the coating surface was not flat, there were a lot of small pits and adhesion. The coating section had a small amount of porosity and crack. Mutual diffusion of main elements happened between coating surface and substrate. The obtained coating was a composite coating by metallurgical reaction between Ti, Zr, and WC. Residual stresses existed in the coating and the residual stress of the property can be controlled by changing the technological parameters. The micro-hardness of the coating surface was about 4 times as that of the substrate, the wear quality of Zr/WC composite coating was much less than that of TA2,εw=4. 1, the relative wear resistance of the deposited layer was increased by 3. 1 times, the wear resistance improved significantly. Conclusion The performance of the substrate can be improved by TA2 and Zr/WC coating.关键词
TA2/Zr/WC/电火花沉积/复合涂层/界面行为Key words
TA2/Zr/WC/ectro-spark deposition/duplex coatings/interface behaviors分类
矿业与冶金引用本文复制引用
吴公一,张占领,孙凯伟,于华,邱然锋,石红信,张柯柯..TA2表面电火花沉积Zr/WC复合涂层特性及界面行为研究[J].表面技术,2016,45(1):96-100,5.基金项目
国家自然科学基金(U1294520) Fund: Supported by the National Natural Science Foundation of China(U1294520) （U1294520）
